Right now
The most recent data we hold from NOAA arrived 20 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 4 July 2026 at 21:00 UTC. It is kept here as a record.
It is the 3rd strongest of the 22 detections recorded within 20 km of this point since 17 March 2026. Another comparable one was recorded here earlier the same day. 2 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued July 4 at 4:23PM EDT until July 4 at 5:00PM EDT by NWS Charleston WV
Urban PEI: 20,130 within a heuristic 50 km radius; not unique people.
Nearby, since 17 March 2026
- July 4, 2026 · score 34 · 7.7 km
- August 27, 2026 · score 34 · 10.3 km
- September 4, 2026 · score 40 · 12.7 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 34 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 34 / 100 |
| Legacy data-support index | 0.87/1 |
| Coordinates | 39.2457, -78.9774 |
| Nearest City | Cumberland (49 km) |
| Urban exposure index (PEI) | 20.1K within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-07-04T20:23:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Severe Thunderstorm Warning_noaa_urn:oid:2.49.0.1.840.0.090c3bd97a333551ec38df492aadd9f6 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-07-04T20:23:00.000Z.
First archived: 2026-07-04T20:25:30.646Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Randolph, WV; Alleghany, VA; Bath, VA; Botetourt, VA; Rockbridge, VA; City of Covington, VA; Greenbrier, WV; Allegheny, PA; Beaver, PA; Butler, PA and 22 more areas |
| Headline | Severe Thunderstorm Warning issued July 4 at 4:23PM EDT until July 4 at 5:00PM EDT by NWS Charleston WV |
| Expires | 2026-07-04T17:00:00-04:00 |
| SenderName | NWS Charleston WV |
| HasExactCoords | true |
| MergedCount | 25 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.090c3bd97a333551ec38df492aadd9f66a9c7b6d.001.1","noaa_urn:oid:2.49.0.1.840.0.9cdfb15066cbcc3dbafd9ff44784b31308c1bc51.001.1","noaa_urn:oid:2.49.0.1.840.0.35c53a0861519807a71b88f808c7ae54e4237396.002.1","noaa_urn:oid:2.49.0.1.840.0.3e01bb220e529b3937a8bb8b75cce59d0d645e7a.001.1","noaa_urn:oid:2.49.0.1.840.0.87d7c9d4f756a992dc5b2c3a90024be53b676c06.001.1","noaa_urn:oid:2.49.0.1.840.0.ab2494bc3debf006b91b36c71fef2336058a2f54.001.1","noaa_urn:oid:2.49.0.1.840.0.747d1e3b62afc040212aaa6cae65d23bf08136d7.001.1","noaa_urn:oid:2.49.0.1.840.0.08eeb58db4c22fc4f1e9d828c72d7293e21c7813.002.1","noaa_urn:oid:2.49.0.1.840.0.d1431c04a477504be7a11e3f051d6884e0facc49.001.1","noaa_urn:oid:2.49.0.1.840.0.f89aed7f0882be6a41dc9b71b48df4905a2e1a3d.001.1","noaa_urn:oid:2.49.0.1.840.0.8a0b4fb03612eec2e3bb2d191deb4a1264ae5055.001.1","noaa_urn:oid:2.49.0.1.840.0.9cca41cda330a6ed37c917340c15983bae5578eb.001.1","noaa_urn:oid:2.49.0.1.840.0.79dfa0aee8af935423517926ea76b66cbd5681a6.001.1","noaa_urn:oid:2.49.0.1.840.0.c413cfde13d349e84757ce47d4350e1de2c85652.001.1","noaa_urn:oid:2.49.0.1.840.0.2502adbd10a49aa5d1971e8a38e40bedd20fdb21.001.1","noaa_urn:oid:2.49.0.1.840.0.527858b3602d88e4163cac23798d285dd081ac3a.001.1","noaa_urn:oid:2.49.0.1.840.0.43659d328858414453bacef25a128b63da832231.002.1","noaa_urn:oid:2.49.0.1.840.0.e3340719afdcd148e68b29344a8ff21bb05f407c.001.1","noaa_urn:oid:2.49.0.1.840.0.dbc91b2def0ee0486f3e0f43040382321fdc3bfe.001.1","noaa_urn:oid:2.49.0.1.840.0.09842c8e2ed4dfddc4c72fe8e2b9c3f0c67dc727.001.1","noaa_urn:oid:2.49.0.1.840.0.2a4e12fc48344c17a50b0060bafa6053c2561da7.001.1","noaa_urn:oid:2.49.0.1.840.0.f5520f8679f5c48cfc15f5e925b8fe83cee1ea70.001.1","noaa_urn:oid:2.49.0.1.840.0.3343fd5b8341edc635cdefcc7381ac47653af819.002.1","noaa_urn:oid:2.49.0.1.840.0.e88aa79a944b4b60f7eff2ddc165b05b0e51a277.001.1","noaa_urn:oid:2.49.0.1.840.0.e473a4a330fa11454abd740b69b5fa4fb6803040.001.1"] |
| Iem TypeSummary | D |
| Iem City | 6 ENE Brandonville |
| Iem County | Preston |
| Iem State | WV |
| Iem Wfo | PBZ |
| Iem Remark | trees down. |
| MergedSources | [{"id":"iem_D_38.710_-79.340_1783192080000","source":"iem","severity":"low","severityValue":25,"timestamp":1783192080000,"latitude":38.71,"longitude":-79.34},{"id":"iem_D_39.710_-79.520_1783190220000","source":"iem","severity":"low","severityValue":25,"timestamp":1783190220000,"latitude":39.71,"longitude":-79.52}] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
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